Whistle



Patented Feb. 19, 1929.

UNITED-SITA1-es- PATENT- orricr.

ELMER R. EMERSON; AND NRANK M; BEVER, or WILSON, ARKANSAS. i

WHISTLE;

This invention relates tov a locomotive whistle valve, the general object of the invention boing to provide ,a way toA stop. all steam leaks possible, by a valvek body with specially constructedby-passes, a piston head cast integral with the vsliding valve to complete the comn'iunication between .the lower end of the main bore .of the Valve body tov by-passes and outlet chamber thereof, Ia piston which is connected with the sliding valve and centrally arranged in the body, with suitable means provided at its upperen'dv to receive theusual operating lever; two opposed by-passes take oil from the lowermain 'bore at point directly under the piston and at right angles to the main bore, then angleat 90o and parallel bore to the outlet chamben In-'action, the operating lever exerts a downward pressure directly on the piston and causes the sliding valve to move off its seat, thereby permitting steam from the boiler to enter the lower end of the bore7 thence through the by-passes and the outlet chamber'. v

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing our invention in detail', reference will be had' to the accompanying drawings wherein like characters denote like or corresponding parts throughout-k the several views, and in which Y y Figure 1 is a sectional view through the improved device.

' Figure 2 is a similar view, but taken at right angles to Figure 1this figure showing the valve closed. p

Figure 3 is a section on line 3 3 of Figure 1.y

Figure 4 is a section on line 4-*4 of Figure 2.

Figure 5 is a view of the operating lever.

In these views, the numeral 1 indicates thek body of the whistle which has its upper end enlarged, as at 2, to form the chamber 3 and the body is provided withv a bore 4 which passes through the lower end of the body and terminatesA a distance from the top of the body. The lower end kof the bore is countersunk to form a valve seat. The body is also formed with a pair of by-passes 5 which connect the bore. with the chamber 3 and an annular groove v6 with beveled walls is formed in, the Walls o1 the bore and with which the lower ends' of the luy-passes comn'lunicate.

` A piston 7 is slidably arranged in the bore an'dfhas its lower part of cross shape in cross section, shown at 7, and the valve 8 is connected with the lower end of this cross shaped part. An opening 10 is formed in the vpiston, to receive the rounded end ot'- the oplfastened tothe upwardly projecting part 1G at the central `ortion of the body bythe stem or stud 17 wli whistle.

The piston is provided with the'usual rings v18 to` make a tight joint between itself andl the walls of the bore.

From the foregoing it will be seen that when the piston is depressed by the lever 11, the valve will be movedv off of its seat so that steam can pass through the lower part of the bore into the groove 6 and through the bypasses 5 into the chamber 3, from'which it' will escape through ythe annular, opening 19 formed between the spread ring and the walls 'of the chamber 3 to produce thel whistling noise. When the piston has raised, the valve will engage its seat and thus prevent steam entering the whistle. By making the groove 6 as shown, the piston can be easily put in place, as the beveled Walls of the groove 6 will act to contract the ring 18 and prevent the ring from interfering with the upward movement of the piston. This arrangement also aids in the assembling and disassembling of the parts of the valve.

A screw 20 is threaded through a hole in the wall of the body and projects into the opening l() of the piston to prevent the piston dropping from the body into the boiler when the lever 11 is removed. Thus we have produced a simple form of whistle, the movable parts of which are centrally arranged in the body, with by-passes for conducting the steam from the lower part of the body into the outlet chamber.

It is thought from thevforegoing description that the advantage-s and novel features of our invention will be readily apparent.

ich supports the bell of the It is to be understood that we may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What we claim is 1. A whistle comprising an integral body having an enlarged upper end forming a chamber, with a central projection at its upper end extending into the chamber', said body also having a centrally arranged bore extending from a point in the lower part of spread plate supported from and connected to the projection and covering the major portion of the top of the chamber, said body having an opening at one side thereof communicating with the upper part of the bore and the piston having an opening therein and an operating lever pivoted in the openingin the body and extending into the opening in the piston whereby the piston will be lowered having an enlarged upper end forming a i chamber, with a central projection at its upper end extending into the chamber, said body also having a centrally arranged bore extending from a point in the lower part. of the projection through the lower end ofthe body and a pair of by-passes connecting the lower partof the bore with the bottom of the chamber, and Said body having anV annular groove therein, the side walls of which are beveled and which connects the lower ends. of the bypasses with the bore, a. piston in the bore having a cross-shaped lower part, a valve connecte-d with the lower end of the said part for closing the lower end of the bore when the piston is raised, a spread plate resting upon the projection, a bell stem threaded in the projection and holding the plate thereon and an operating lever passing through a part of the body and engaging apart of the piston.

In testimony whereof we' affix our signatures.

ELMER R. EMERSON. FRANK M. DEVER. 

